Acetylene-gas lamp.



No. 639,434. Patented Dec. l9, I899.

H. RIEMANN. ACETYLENE GAS LAMP (Application filed Mar. 2a, 1899.)

(No Model.)

Tar NORRIS Paras co muruumu. WASHINGTON. n. c,

who draws much,

A'TENT ACETYLEN E -GAS LAM P.

SPECIFICATION forming part of Letters Patent No. 639,434, dated December19, 1899. Application filed March 23, 1899. Serial No. 710,247. (Nomodel.)

To all whom it may concern.-

Be it known that I, HERMANN RIEMANN, manufacturer, a subject of the Kingof Saxony, residing at Chemnitz-Gablenz, in the Kingdom of Saxony, andGerman Empire, have invented certain new and useful Improvements inAcetylene Lamps or Generators, of which the following is aspecification.

My invention relates to acetylene lamps or generators, and provides anefficient means of securing the carbid-holder to the lamp or generatorin an air-tight and secure manner.

In the accompanying drawings, Figure l is a Vertical section, and Fig. 2a horizontal section, on the line X Y of Fig. 1, of the invention asprovided for the carbid-holder of an acetylene-lamp.

The arrangement is as follows: The carbidholder A is contained in a caseB, the upper rim or part of which is provided with two or more hookedflanges or plates 0. The lower part of the body or base of the lamp orgenerator D is formed into or provided with a circular flange E, brokenaway at parts, so as to form free spaces F of a width equal to orgreater than that of the hooked flanges C and to correspond as regardsposition with said hooked parts. The circular flange E is shaped like agutter, open at its upper end, so that when the two parts are placedtogether the hooked parts pass through the free space, and then byrotating the two parts relatively to each other the hooked parts willengage in the corresponding channels in the lamp-body flange, therebyforming a bayonet-joint. To render this joint air tight and to provideagainst any accidental disengagement, the bottom Bof the case Bisprovided with a screw S, (or it may be a strong spring,) the end ofwhich is applied to the bottom A of the carbid-holder A, which screw Scan be turned from the outside in order to press the carbidholder Aagainst the body D of the lamp, which is provided with suitable packing,and to draw the case B downward with such force that a firm andunyielding interlocking of the bayonet-joint is secured. In such mannera perfectly gas tight connection is secured by a device which may bereadilylocked or unlocked when required.

Of course the interlocking device may be arranged on the inside insteadof on the outside of the part to be connected.

Instead of the caseB a simple yoke (or yokes) with its ends bent inwardmay be used; but the first-described arrangement will be found topossess great merits over the other modifications, inasmuch as asecuring device is obtained which in consequence of its smooth and neatappearance and its absence of projections, levers, and screws willalways commend itself.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is i In an acetylene-gas lamp, the combination with thelamp-body having an annular de pending rim upon opposite sides thereofpro vided with circumferentially-arranged integral flanges E, separatedfrom each other by spaces F, said flanges extending partially around thelamp-body and having their edges bent outward and upward to provideprolonged hooked portions, an annular packingring G, seated in the upperpart of the lampbody and inclosed by said rim, of a removablecarbid-holder adapted to make contact at its upper edge against thepacking-ring, a case B, inclosing the carbid-holder and having inwardlyand downwardly bent hooked portions 0, upon opposite sides thereof atthe top arranged to enter the said spaces F, between the flanges E, andfit over the latter when the case is turned away from the said spaces F,and a screw tapped through the bottom of the case and arranged to actupon the under side of the carbid-holder to force the upper edge thereofagainst the packing-ring to effect a tight closure of these parts,substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

IIERMANN RIEMAN N.

Witnesses:

A. REUOHER, JOSEPH P. FOX.

